The temperatures in Lisbon in September are comfortable with low of 17°C and and high up to 27°C.
You can expect a few rainy days in Lisbon during September, but usually the weather is comfortable in September.
Our weather forecast can give you a great sense of what weather to expect in Lisbon in September 2025.
If you’re planning to visit Lisbon in the near future, we highly recommend that you review the 14 day weather forecast for Lisbon before you arrive.
Temperatures
27° / 17°
Rainy Days
2
Snowy Days
0
Dry Days
28
Rainfall
38
mm
Sun Hours
11.4
Hrs